Project 3

Focus at different apertures


For this exercise, i needed to take 3 photographs of the same subject using 3 different apertures.
The object of this exercise, was for me to be able to see the effect of using a different aperture has on a image.
The three images were taken with 1 image using the lens at the largest aperture, 1 image with the lens set at a mid point and the final image with the lens at the smallest aperture.


Image 1
F1.8   1/800sec  ISO 1600

This image was taken with the lens set at F1.8 (largest aperture)
As you  can see, only the center of the image is in focus, Whilst
the rest of the image is thrown out of focus.
From this i notice that the use of a large aperture in a photograph will result in a very shallow depth of field.
This also results in your eye being drawn to a certain area of a image.









Image 2
F8  1/40sec   ISO 160

In this image, i used an aperture of F8. This resulted in the depth of field to appear wider in the center of the image.
With the aperture set at a mid point, far more of the image appears clearer, but still leaving the background and foreground slightly out of focus.
There is not a huge difference in the depth of field between F1.8 and F8 in these images but that is due to the closeness of the objects.









Image 3
F22   1/5sec   ISO 1600

In this image, i set the lens aperture to F22, this resulted in most of the image to appear in focus, rather than just certain areas.
Again there is not a huge difference between image 2 and image 3 (F8 and F22) but the the depth of field is clearly visible between image 1 and 3 (F1.8 and F22)  from this, i can now have a better understanding of the principles of depth of field and how it alters the image.











Notes


This exercise has shown me how i can use various lens apertures, to create a different feel to a image. i found this exercise quite useful as it helped me get a better understanding of aperture and depth of field, and the effects that they have upon a image.
I have also learnt to check my camera settings before i take any more photographs, as i noticed after taking the last series of images that i had left the ISO at 1600.